By now you've probably seen the viral Harry Potter characters' Myers-Briggs types chart. When I first happened upon it last month, the timing could not be more uncanny; a friend had mentioned that her personality type had changed drastically over the years, so I had just taken the test again myself. Is it more common for your type to change over time, or to stay consistent through the years? Because for me, all three times I have taken the full test — over the span of about a dozen years — I have received the same result: ISFJ. (So according to the Harry Potter chart, I'm Neville Longbottom. Perhaps I too, will have an unforeseen moment of kickassery one day? ;-) Also, if...